## List Files

`FileListPageResponse Files.List(FileListParams?parameters, CancellationTokencancellationToken = default)`

**get** `/api/v1/beta/files`

List files with optional filtering and pagination.

Filter by `file_name`, `file_ids`, or `external_file_id`.
Supports cursor-based pagination and custom ordering.

### Parameters

- `FileListParams parameters`

  - `IReadOnlyList<string>? expand`

    Fields to expand on each file.

  - `string? externalFileID`

    Filter by external file ID.

  - `IReadOnlyList<string>? fileIds`

    Filter by specific file IDs.

  - `string? fileName`

    Filter by file name (exact match).

  - `string? orderBy`

    A comma-separated list of fields to order by, sorted in ascending order. Use 'field_name desc' to specify descending order.

  - `string? organizationID`

  - `Long? pageSize`

    The maximum number of items to return. Defaults to 50, maximum is 1000.

  - `string? pageToken`

    A page token received from a previous list call. Provide this to retrieve the subsequent page.

  - `string? projectID`

### Returns

- `class FileListPageResponse:`

  Paginated list of files.

  - `required IReadOnlyList<FileListResponse> Items`

    The list of items.

    - `required string ID`

      Unique file identifier

    - `required string Name`

      File name including extension

    - `required string ProjectID`

      Project this file belongs to

    - `PresignedUrl? DownloadUrl`

      Schema for a presigned URL.

      - `required DateTimeOffset ExpiresAt`

        The time at which the presigned URL expires

      - `required string Url`

        A presigned URL for IO operations against a private file

      - `IReadOnlyDictionary<string, string>? FormFields`

        Form fields for a presigned POST request

    - `DateTimeOffset? ExpiresAt`

      When the file expires and may be automatically removed. Null means no expiration.

    - `string? ExternalFileID`

      Optional ID for correlating with an external system

    - `string? FileType`

      File extension (pdf, docx, png, etc.)

    - `DateTimeOffset? LastModifiedAt`

      When the file was last modified (ISO 8601)

    - `string? Purpose`

      How the file will be used: user_data, parse, extract, classify, split, sheet, or agent_app

  - `string? NextPageToken`

    A token, which can be sent as page_token to retrieve the next page. If this field is omitted, there are no subsequent pages.

  - `Long? TotalSize`

    The total number of items available. This is only populated when specifically requested. The value may be an estimate and can be used for display purposes only.

### Example

```csharp
FileListParams parameters = new();

var page = await client.Files.List(parameters);
await foreach (var item in page.Paginate())
{
    Console.WriteLine(item);
}
```

#### Response

```json
{
  "items": [
    {
      "id": "dfl-aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee",
      "name": "invoice.pdf",
      "project_id": "123e4567-e89b-12d3-a456-426614174000",
      "download_url": {
        "expires_at": "2019-12-27T18:11:19.117Z",
        "url": "https://example.com",
        "form_fields": {
          "foo": "string"
        }
      },
      "expires_at": "2019-12-27T18:11:19.117Z",
      "external_file_id": "ext-12345",
      "file_type": "pdf",
      "last_modified_at": "2019-12-27T18:11:19.117Z",
      "purpose": "parse"
    }
  ],
  "next_page_token": "next_page_token",
  "total_size": 0
}
```